The mid front unrounded vowel is a type of vowel sound that is used in some spoken languages. There is no dedicated symbol in the International Phonetic Alphabet that represents the exact mid front unrounded vowel between close-mid [e] and open-mid [ɛ], but it is normally written ⟨e⟩. If precision is required, diacritics may be used, such as ⟨e̞⟩ or ⟨ɛ̝⟩ (the former, indicating lowering, being more common). In Sinology and Koreanology ⟨ᴇ⟩, (small capital E, U+1D07, &#7431;) is sometimes used, for example in the Zhengzhang Shangfang reconstructions.

Kensiu, spoken in Malaysia and Thailand, is claimed to be unique in having true-mid vowels that are phonemically distinct from both close-mid and open-mid vowels, without differences in other parameters such as backness or roundedness.[1]

Its vowel backness is front, which means the tongue is positioned as far forward as possible in the mouth without creating a constriction that would be classified as a consonant. Note that rounded front vowels are often centralized, which means that often they are in fact near-front.

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